Author Archive

Cooling Fan Tachometer standards

Internet is usually a goldmine of all technical information, but there’s not much on the internet about the rpm rotation sensor and it’s specification. CPU Cooling Fan Tachometer standards tries to fill this gap. It page describes a little about the tachometer or rpm rotation sensor and it’s electronics. CPU fan pinout page gives the

Arduino programming

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It’s intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. So very interesting stuff.. The microcontroller on the board is programmed using the Arduino programming language and the Arduino development environment. Arduino programming environment is lean

Microphone connections

I have written a lot of on electret microphone connections on my Powering microphones document. Here are some additions to my documents on electret microphones I found at SANKEN Basis of Wiring Method web page. The first circuit diagram shows the traditional “2 wire” method of wiring an electret capsule. Practically all electrets I have

EMC fundamentals and groundloops

Some days ago read Things Every Electrical Engineer Should Know about EMC slide set by Todd H. Hubing Michelin Professor of Vehicular Electronics Clemson University. I must say that it is an interesting slide set to check. It is a short 25 slide set that introduces EMC fundamentals and ground loops. Here is one fact

LED party room

Can you have too many LEDs on one lighting system? Hard to say. For reference take a look at this video of Smack Nightclub’s amazing LED lightshow. This looks pretty awesome even on the video. This is definately not for those people with motion sickness or can feel sick near flashing lights. I am just

Car electronics security

Modern automobiles are no longer mere mechanical devices; they are pervasively monitored and controlled by dozens of digital computers coordinated via internal vehicular networks. Experimental Security Analysis of a Modern Automobile report experimentally evaluates these issues on a modern automobile and demonstrate the fragility of the underlying system structure. The paper demonstrates that an attacker

How trackable is your browser?

Is your browser configuration rare or unique? If so, web sites may be able to track you, even if you limit or disable cookies. Panopticlick service tests your browser to see how unique it is based on the information it will share with sites it visits. The service will show the information your web browser

He's got to be Vanjoking!

Nokia‘s Executive Vice President Anssi Vanjoki just recently told that Cell Phone Cameras Will Replace DSLRs. Reuters put out news Nokia exec: phones to make system cameras obsolete which says that according to Nokia sales chief fast developing cameraphone technology will shortly make SLR system cameras and even professional cameras obsolete. It was even claimed